Machine for making flat bands or tube sections



Feb. 10, 1925. 1,525,498

W. L. DROWN MACHINE FOR MAKING. FLAT BANDS 0R TUBE SECTIONS 3Sheets-Sheet 1 Filed April 8, 1921 W. L. DROWN MACHINE FOR MAKING FLATBANDS 0R TUBE SECTIONS Filed April 8, 1921 5 Sheets-Sheet 2 Feb,'10',1925.

W. L. DROWN MACHINE FOR MAKING FLAT BANDS OR TUBE SECTIONS sv sneegssneat- 5 Filed April 8, 1921 fig 10 IIFJIMFITI l|||||L Patented Feb. 10,1925.

ufmrao STATES PF'A'TENT OFFlCE.

WTLLIAM L. DROWN, 0F WORCESTER, MASSACHUSETTS.

MACHI IINE FOR MAKING FLAT BANDS OR TUBE SECTIONS.

Application filed. April 8, 1921. Serial No. 459,575.

To all whom it may concern:

Be it known that I, \VILLIAM L. DROWN, a

citizen of the United States, residing at Worcester,

in the county of Worcester and Commonwealth of Massachusetts, haveinvented a new and useful Improvement in a Machine for Making Sections,of which.

the following,

Flat Bands or Tube together with the accompanying drawings, is aspecification.

The present invention relates to the manufacture, from paper or the tioncontemplates such articles from a of flattened like,

The invenor other material, which web is continuously and progressivelyformed into a flattened or distended tube, from the end of which thebands are successively rate of speed\ The various novel tion are setforth in detail hereinafter,

out off at a high features of the invenreference being had to theaccompanying drawings, in which- Fig. 1 is a plan view showin onearrangement of mechanism in accor ance with the invention.

Fig. 2 is a view in side elevation of the mechanism shown in Fi 1.

Fig. 3 is an enlarge view showing a ,device employed for impartingflattened tubular form to the web of material.

Fig. 4 is a vertical sectional view on the line 4-4 of Fig. 3.

5 is an enlarged detail view of tlie mechanism for gumming the web ofmaterial.

Fig. 6 is atop plan view of, the gum hopper shown in Fig. 5.

Fig. 7 is a sectional of Fig. 5.

Fig. 8 is an end view mechan1sm..

view on the line 7 7 of the gumming Fig. 9 is an end vi w of the otherend of the machine, showing the band cutting.

mechanism.

. Fig. 10 is a top plan view of the cutting mechanism shown in Fig. 9.

Fig. 11 is a vertical sectional view of said cutting mechanism.

Like .reference characters refer to. like parts in the differentfigures.

As shown in Figs. such as paper or the like,

1, 2 and 5, the material,

from which the crank lever, one arm The manipulation of over which theflat web A passes on its way to the tube forming, feeding, printing andcutting instrumentalities hereinafter described.

The web Ais continuously unwound from the supply roll 1 and passesforwardly of the machine in the general direction imparted thereto bythe uide roll 2; the passage of the web aroun the guide roll 2 and itsdelivery, tangentially, from the top surface of said roll is availed offor the purpose of laying a line of moist adhesive along onelongitudinal edge of the web in the manner now to be described.

Adjacent the guide roll 2, the machine frame providesa forked bracket 3,the latter'serving for the pivotal support of a bell 4 of which carriesa receptacle 5 adapted to contain a heavy slow-flowing adhesive. Theother arm 6 of the bell crank lever extends downwardly and is attachedto the frame of the machine by a yielding spring 7 tending to draw itinwardly, as shown in Fig. 5. The end of the arm 6 has a threadedenlargement 8 in which works an adjusting screw 9, the end of whichbears against the fixed framework. screw 9, which is adapted to be setin any desired positionby a wing nut 10, procures a delicate adjustment, relative to the surface of the web A, of the end of an outlet tube11, leading from the receptacle 5.

As shown in Figs. 5 to 8 inclusive, the end of the tube 11 is disposedin overlyin relation to one edge of the travelling web as the latterpasses over the guide roll. The

axis of tube 11 is in vertical alinement, sub

the contour of said roll at the point 7 curved end 12 of tube 11 againstthe web is controlled by the spring 7 and the screw 9, and may be variedto suit different operating conditions and different kinds of adhesive.In this way, the, mechanism can be adjusted so as to bear on the web Ajust sufficiently to let the proper amount 9f adhesive exude from theend of the tube 11, said adhesive being wiped onto the edge of thetravelling web in the proper amount under any condition of operation.The receptacle 5 ispreferably rovided with a cover 15, which is adaptedto be clamped down tightly to prevent access of air or any foreignmatter to the adhesive.

, Referring to Figs. 1 and 2, the continuous draft on the material ofthe Web A to draw it forwardly through the machine is effected by a pairof constantly rotating feed rolls 16, 16, the latter being gearedtogether, and the lower feed roll being driven by gearing 17 17 from atransverse shaft 18. The latter carries a bevel gear 19 in mesh-with abevel pinion 20 on shaft 21, which may be rotated by worm gearing 22from a motor or other prime mover 23. The feed rolls 16, 16 however, donot act on the fiat web A, but rather on the same after it has beenconverted into a flattened tube, by passage through suitable formingmechanism, about to be described, which forming mechanism is introducedbetwfien the gumming mechanism and the feed r0 5.

Said forming mechanism is illustrated in Figs. 3 and 4721s carried by asuitable bracket 21 which provides support for a hollow tubular member25. The bracket 24 also r0- vides support for a second hollow tubularmember 26 disposed inside the member 25 and projecting beyond the endsof thelatter. On that portion of the member 26 inclosed within themember 25 are mounted suitably formed collars 27, 27,- whose maximumdiameters are somewhat less than the interior diameter of member 25, toenable the web material to pass freely between said 001- lars and saidmember 25. The peripheral surfaces of the collars 27 are preferablycurved in such a manner as to minimize the friction of the movingmaterial, which has progressively imparted thereto a tubular form by itspassage through the annular spaces 28 thus provided.

It is to be understood, of course, that the mechanism contemplates theprovision of members 25 of different interior qdiameters, for use withvarious sizes of collars 27, so as to accommodate-the machine to thehandling of webs of varying width for the production of different sizedbands. As indicated diagrammatically in Fig. 2, the flat web A, afterleaving the gumming mechanism, undergoes a gradual deflection to enableit to enter the annular passage provided by the forming mechanism; inthe latter, this deflection isaugmented to the extent of causmg theedges of said web to overlap, there- .by passing out of the formingmechanism in substantially tubular shape, and in readiness for theflattening or distending operation.

As herein illustrated, this flattening is accomplished by .a pair ofguide members 29, which are pivoted on the opposite sides.

of a member 30 which is secured to the projecting end of member 26. Theguide members 29 are capable of limited movement in a horizontal plane,being yieldingly drawn together by a spring 31, the force of which isresisted by pins 32, 32 projecting inwardly from the guide members 29,29 and adapted to bear on the wedge shaped adjustable member 33. Themember 33 is carried by a rod 34 which extends through the inner tubularmember 26, said rod being adjustable by means of a nut 35, to move themember 33 in or out, relative to the end ofmember 26, thus eitherdistending or drawing in the guide members 29, be seen that said members29 can be ad justed to suit various conditions of operation'and varioussizes of tubes, with the result-that any given tubular section emergingfrom the member 25, with its edges overlapped and joined by adhesive,will be flattened sufficiently by the guide members so as to pass to thefeed rolls 16 in a horizontal plane; the latter therefore, as previouslynoted, act not upon the single thick ness of fiat web A but upon adouble thickness of tubular section, as indicated at B, Fig. 2.

In advance of the feed rolls 16, 16 may be provided any suitableprinting devices, here shown diagrammatically in the form of rolls 36,36, the latter being driven by gearing 37, 37 from a shaft 38. Saidshaft 38 carries a bevel gear 39 in mesh with a bevel pinion 40 ontheopposite end of shaft 21 rom the bevel gear 19. After being printed,the double thickness flattened tubular section B is in readiness to besevered transversely into bands of the desired width, this beingaccomplished by a reciprocating cuttin mechanism at the end of themachine, designated generally by the numeral 41.

as may be desired. It will thus The operation of this cutting mechanisminvolves momentary stoppages in the con '2 carried by head tinuoustravel of the tubular flattened material B, and these are compensatedfor withtion 46 from a shaft 47, the latter being driven by gearing 48,48 from a shaft 49 that has a silent chain and sprocket connection 50with the prime mover,23.

In order to procure the projection of the flattened tube B beyond theedge of support 45, the feed rolls 51 and 52 are provided, the roll 51being fixed iii the framework, while the roll 52 is carried in verticalmovable standards 53, the latter being normally urged upwardly bysprings 54. Said roll 52 is driven from a shaft 55 by bevel gearing y 56said shaft carrying on its lower end a friction wheel 57 which bearsagainst the surface or a friction disk 58, the latter being mounted on acountershaft 59 which is connected by gearing 48 with the shaft 49.

To procure the severance of the flattened tube B by reciprocating knife44, Said tube must be clamped and held momentarily by each stroke of theknife on the support 45. This is accomplished by'a clampin member 43,which, in the upper position of saidhead, is so disposed as to leavesuflicient space for the movement of flattened tubeB. Adjustment oi thisclamping member is efiected by suitable nuts 61 engaging the screwthreaded ends of its shanks 62 which pass through the head 43. Springs63 are provided for said shanks, to cushion the movement of the clampingmemher and to permit further descent of the head, for the operativestroke of the hiife after the tube B has been securely clam ed. The head43 has rearwardly exten ing projections 64, 64 carrying set screws 65,65 which bear against the tops of the standards 53, 53 oflower feedrollr52. B this means, said feed rolls 51 and 52'are apted to beseparated, and rendered inoperative, momentarily, on'the descent of thehead 43-, which first clamps the flattened tube B in stationary positionbetween the parts 45 and 60 and 'then severs the projecting end of sameby knife 44. On the upstroke of the head, the rolls 51 and 52 arequickly rendered operative to project said flattened tube .B aredetermined distance, as controlled by t e speed adjustment of saidrolls which is aflorded by the friction drive of shaft 55; said-speedadjustment provides the usual means, here shown as, a lever 66,

- for moving the friction wheel 57 radially toward or from the axis offriction disk 58,, As the roll 52 reaches its upper operative position,it cooperates with the roll 51 to advance the flattened tube, the latterbeing guided by suitable stationary members 67, 67 disposed between saidrolls and the support 45. I

It will thus be seen that there is an exceedingly rapid intermittentfeed of the advancing end of 51 and 52, the latter being renderedalternately operative and inoperative by the rapid reciprocations of thehead 43. On the other hand, the major portion of 'tube B has a constantfeed, by the action of feed rolls 16, and hence some suitable mechanismmust be provided to compensate for the two diflerentkinds of feed and-tocushion or otherwise counter-balance the effect on the tube B of thesudden and'rapidly recurring operations of rolls 51 and 52.

Such mechanism, as here shown, takes the form of apair of suitablymounted yielding guide rolls 68 and 69. The roll 68, around which thetube B is first led on its Way from. the printing mechanism, is mountedon a bell crank lever 70 pivoted at 71 to a bracket 72 of the framework.The tube B passes backwardy from the roll 68, over the top of and aroundroll 69, the latter be-- ing mounted on a bell crank 7 3 ,which ispivoted at 74. The other arms of the bell cranks 70 and 73 oppose eachother, as shown in Fig. 2, being linked together by a pivot pin 75. Thelatter is normally urged upwardly by an expansivespring 76, which tendsto rock the rolls 68 and 69 bodily in opposite directions away from eachother. On the other hand, the tension of the tube B tends to draw saidrolls together against the force of spring 7 6.

Said flattened tube B, after passing around and below the roll 69, issubject to the action of a suitable friction device, here shown as aspring pressed roller 77 which pinches the tube against a stationarymember 78. The friction device imparts a slight drag on the flattenedtube B so as to act as a brake thereon against undue movement or sameeither by the rolls 51, 52 or by the rolls 68 and 69.

The operation of the mechanism will be clear from the foregoingdescription. The constant feed of the flattened tube section B by therolls 16, 16 is taken care of, during the momentary stoppages of rolls51 and 52, by the vibrating rolls 68 and 69. When the rolls '51 and 52are separated, for the instant that the end of the tube B is clamped onthe support 45, said tube B is'maintained taut by t e ensuing slightseparation of rolls 68 and 69, under the influence of 5 ring 76. On theother hand, when the ro 51 and 52 are brought together, and therebycause forward movement of the tube at a flattened tube B by the rollsing means, to impart asubstantially cylin-- slightl faster rate thanthat im arted by the ro ls 16, the rolls 68 an 69 yield toward e other,thereby preventing any unduestr of tension on t- I claim, 1. Inapparatus of the class described, the combination with feedin means, ofa forming device operable in advance of said feede tube.

means being replaceable by similar means.

of different size for sheets of different width, and means associatedwith said forming means and interposed between said formi means and saidfeeding means for distendmg said tubular section, whereby to present itto said feeding means in substantially flattened form, said distendingmeans being adjustable for tubes of difiercnt size.

3. In apparatus of the class described, means for a plying a line ofadhesive to a travelling we of material said means comprising a rollaround which said web passes, and a superposed adhesive suplply device 3presenting a definite area for t e gravity movement of adhesive ontosaid web at the i point of itstangential passage ofi of said roll in a hontal plane.

4. In a aratus of the class described, means for applying a line ofadhesive to a travelling web of material, said means comprising a rollaround which said web passes, a superposed adhesive supply devicepresenting a definite area for the avity move ment of adhesive onto saidwe at the point where said web passes tangentially 011' of said roll, ina horizontal lane and means for adjustingthe pressure 0? said adhesivesupply device on said web and roll.

5. In apparatus of the class described, the combination with a rollaround Which'passes a travelling web, of a confining means for thegravity flow of adhesive material onto said Web, the outlet of saidconfining means conforming substantially to the curvature of said rollat the point where said web passes tangentially ofl of said roll in ahorizontal plane.

6. In apparatus of the class described, the combination with a rollaround which passes a travelling web, ofa confining means for thegravity flow of adhesive material onto said web, the outlet of saidconfining means conforming substantially to the curvature of said rollat the point where said web passes off of said roll, and said outletincreasing in width toward the direction of travel of said we 7 WILLIAML. BROWN.

